Ion-selective electrode and enzyme sensors for flow-type environmental analysis

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Title:Ion-selective electrode and enzyme sensors for flow-type environmental analysis
Creators:
Thomas, J. D. R.
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 56, 1, pp. 178-191

Abstract

Illustrative examples from researches in the author’s laboratories are given of potentiometric ion-selective electrodes (ISEs) and catalytic membrane amperometric electrodes suitable for environmental analysis. The uses of sulphide ISEs are demonstrated for monitoring the activities of sulphate-reducing bacteria, in effluent analysis for sulphide, and in process/effluent analysis for sulphide, thiols and polysulphides. Diquat and paraquat ISEs are discussed in relation to their optimisation in terms of appropriate crown ether and ion-pairing agents, together with prospects of their uses. Catalytic membrane systems for use in electrochemical analysis may be based on metal oxide catalysts or enzymes. The best of the new metal oxide catalysts for hydrogen peroxide analysis in association with an oxygen electrode is based on manganese dioxide and offers an alternative to lead dioxide and catalase. An alternative membrane system for use with a platinum electrode is peroxidase in association with a mediator in order to permit a low potential approach for hydrogen peroxide sensing. Hydrogen peroxide is a product of many oxidase catalysed reactions and its electrochemical detection permits the analysis of a wide range of substrates, illustrated here for glucose in various food products and hypoxanthine in the spoilage of fish meats.

Title:Ion-selective electrode and enzyme sensors for flow-type environmental analysis
Creators:
Thomas, J. D. R.
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:56
Number:1
Page Range:pp. 178-191
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19910178UNSPECIFIED
ID Code:4936
Item Type:Article
Deposited On:22 Feb 2010 11:26
Last Modified:22 Feb 2010 10:27

Citation

Thomas, J. D. R. (1991) Ion-selective electrode and enzyme sensors for flow-type environmental analysis. Collection of Czechoslovak Chemical Communications, 56 (1). pp. 178-191. ISSN 0010-0765

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